OmniTek OTR 1001, User Manual

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OmniTek OTR 1001 User Guide, v3.1 I-1
I : Stereo 3D Analysis and
Camera Alignment
This section describes the tools for analysing Stereo 3D (S3D) video that become available
where the VIEW_3D option is installed and enabled, and the assistance that the OTR can offer
towards camera alignment when either the VIEW_3D option or the ALIGNMENT option is
installed and enabled. All video formats are supported including 3G Level A and 3G Level B
(with the appropriate VIDEO_
xx options: see Section V).
The Analysis tools described in this section allow:
Visual comparison of the left and right images
Depth mapping and analysis
Assessment of luma and chroma differences between the left and right images
The additional Camera Alignment tools comprise a set of meters that compare camera set-up
details such as rotation, zoom and colour gain either between the cameras providing the left-eye
and right-eye images or between a single camera and a reference image. These tools are
described in Sections I.8 and I.9. Camera Alignment data is also included in the Status displays
described in Section E.6 (see also Section I.10).
The S3D video may be delivered either as separate Left and Right image streams or in Side-By-
Side (SbS) or Top + Bottom (TaB) formats. The OTR also includes various flip options for
handling S3D video taken from a mirror rig.
The steps used to enable Stereo 3D Analysis and Camera Alignment are given in Section I.2.
Notes: (i) The 3D facilities described here also require the VIEW_2 (Simultaneous Monitoring)
option to be installed. However, this should never be an issue as any sale of the VIEW_3D
option will also include the VIEW_2 option if this is not already licensed.
(ii) Where the GEN_2 option is installed, the OTR can also be used to generate S3D video – see
Section Q.12.
(iii) A white paper on 3D Monitoring and Correction is available on our website at
www.omnitek.tv/3D_White_Paper.pdf
(iv) Many of the facilities described in this section aren’t available when the OTR is in PQA
Mode (described in Section S). However, the single camera alignment facilities described in
Section I.8 do remain available.
Stereo 3D Analysis Terminology
Disparity The amount by which the location of an image feature in the Right-eye (test)
image is displaced relative to the location of the same image feature in the
Left-eye (reference) image. Vertical disparity is measured in lines: horizontal
disparity can be measured either in pixels, or in metres on the screen on which
the image is displayed or as a percentage of the screen width. Where disparity
is mentioned in relation to perceived depth, it is referring to horizontal
disparity, positive values of which correspond to positions behind the screen,
while negative values correspond to positions in front of the screen.